To clarify what @conram indicated;
Before: linux ($root)/boot/x86_64/loader/linux ${extra_cmdline} ${isoboot}
After: linux ($root)/boot/x86_64/loader/linux ${extra_cmdline} ${isoboot} nomodeset
On a side note to those with Intel CPU, add intel_iommu=on as well, it’s for HSI-2 compliance https://fwupd.github.io/libfwupdplugin/hsi.html#org.fwupd.hsi.Iommu
Once system is up and running then you should be able to remove via;
update-bootloader --del-option nomodeset
update-bootloader --config
Thank you. It is generally bad timing I started this topic, because od New-years and Christmass holidays. Also, my work-days do not allow me to practis your advices immediately. That is why I still did not do this. I checked and found lines you are talking about. It is just matterr of time I will practise this.
Thank you for helped me. Hope you will help me for addition questions.
@vajcek Hi, no worries, that’s what the forum is for, so when you have an issue just ask and someone will help you 
ijust wanted to ask, but something went wrong:
What with this?
@vajcek if you add the nomodeset option and your system is up and running after installing, then this is the way to remove the option.
Anotherone detail for ask you:
What with this - where to add?
Thank you for answering my questions. And, please, dont be mad about me. I just weant do this right as I did it before.